The Flash: Preview and Synopsis For Epi 222 (May 17)

The CW
Check out a sneak peek of The Flash episode 222 below.
"Invincible": "After Zoom unleashes an army of Earth-2 meta-humans on Central City, Barry is shaken when he sees their leader is the Black Canary's Earth-2 doppelgänger, the Black Siren. Meanwhile, Wally takes to the streets to help the Flash stop the meta-humans, which worries Joe; and Iris and Henry become concerned about Barry taking on Zoom." - The CW